What Are Plate Glass Windows?

Plate glass windows are windows that are created by using a twin grinding and polishing process. Plate glass is characterised by the creation of larger sheets of glass but became a term that is used for everyday window glass.

Sir Alistair Pilkington developed the float glass method in the 1950s, which came to make the twin grinding and polishing process obsolete. This method makes glass by floating molten glass on a bed of molten tin, giving the sheet uniform thickness and a flat surface. The glass windows that are manufactured today are actually float glass windows, not sheet glass or plate glass windows.

Plate Glass Windows vs. Float Glass

The float glass process has become the universal means of making flat glass windows as it is a low-cost method of creating a high quality glass product.

The process of making plate glass windows is far less economical than that of float glass windows - not only in a financial sense, but also in that it is far more wasteful, requiring an intricate polishing process to give the glass its sheen.
Float glass also allows for the inclusion of certain features and properties - something that wouldn't have been possible in plate glass windows.

Thanks to the development of the successful float glass method, Pilkington has been an industry leader for decades. They have utilised the float glass method and developed a number of glass features that offer added strength, noise control and insulation to glass - they have even developed a Self-cleaning glass

Find out more about Pilkington and how they have revolutionised the glass industry since the production of plate glass windows.